Home / 91,139.09-125,772.29-50,854.55

Finding the Fourth Proportional to 91,139.09, 125,772.29 and 50,854.55

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Solution

The fourth proportional to 91,139.09, 125,772.29 and 50,854.55 is: 70,179.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,139.09 : 125,772.29 = 50,854.55 : x
  2. Step 2: Convert to fraction form
    91,139.09/125,772.29 = 50,854.55/x
  3. Step 3: Cross multiply
    91,139.09x = 125,772.29 × 50,854.55
  4. Step 4: Simplify right side
    91,139.09x = 6,396,092,327.29
  5. Step 5: Solve for x
    x = 6,396,092,327.29/91,139.09
  6. Step 6: Final answer
    x = 70,179.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.